Տատեան գերդաստանը [The Tatian Family], by E. Poghosean/Poghossian (Vienna, 1968). History of a famous Armenian family of the Ottoman Empire. Noted industrialists, bankers, and political advisors, members of the Dadian/Tatian family controlled the empire's gunpowder industry for more than a century. Poghosean's study begins in the 13th century and includes drawings, photographs, and plates. Azgayin matenadaran series, volume 208, in 296 pdf pages. Uploaded by Robert Bedrosian.